Fixed invalid repository URL.
Updated Jenkins configuration.
Revert "Fixed invalid repository URL."

URL WAS correct, and this commit made it invalid.

This reverts commit d4e0ea2dbc2bd278dfd720fc21c6d06b463537b7.
Updated repository URL: use DNS instead of mDNS.

mDNS fails inside Vagrantbox (which uses NAT'ed networking by default).